never ever go to sleep with makeup, once or twice will not make a huge difference to your skin other than acne or dryness, however every full week of sleeping with makeup on will age your skin by even 10 years, http://www.dailymail.co.uk/femail/article-2380419/What-sleeping-make-does-skin-Our-shocking-experiment-exposes-happens.html

It also depends on where you are from geographically and biologically. Fact. The fairer you are the more likely you are to age quickly and the darker you are the less likely you are to age quickly. It is all in the melanin. However there is nothing wrong with looking after yourself and eating well as well as looking after yourself.